Last Data Point

QND.OMS.ManagedSystemLastData.Monitor (UnitMonitor)

Knowledge Base article:

Summary

The monitor checks the last data point submitted to OMS for every manged system and alerts if any of them is not sending data accordingly to two different thresholds. By default the monitor alerts only on obsolete data (older than 24 hours by defualt). If an alert is raised is highly probable your loosing data in an unrecoverrable way. Possibile states

Up to date / Healthy: the data is within the hour.
Delayed / warning: the last data point is older than 1 hours (defualt)
Obsolete / error: the last data point is oldern than 24 hours (default)

For more info see GitHub Wiki

Configuration

The following options can be configured on this monitor:

Option	Definition	Default
IntervalSeconds	Amount of time in seconds between checks of the connectivity status	3611 seconds
Sync Time	Optional time wihtin the hour to sync the check exectuion to
TimeoutSeconds	Amount of time in seconds to wait for script execution and hance for API Search response	30 seconds
TraceLevel	Debugging level (0-5) anything above 2 will log clear text password in eventlog	2
DelayLateHours	Number of hours after which consider an agent in a late/delayed state	1
DelayObsoleteHours	Number of hours after which consider an agent in a obsolete critical state	24

Causes

There two known causes of errors if the issue affects a small part of your managed system

MMA agent has issues on those specific systems
Your proxy /connectivity infrastructure to the cloud has issue for those specific agents. Proxy / NAT authorization missing?

The alert context tries to give a specific cause for any issue

Resolutions

Check the two known causes and fix any issue

Element properties:

Target

QND.OMS.ManagedSystem

Parent Monitor

System.Health.AvailabilityState

Category

AvailabilityHealth

Enabled

True

Alert Generate

True

Alert Severity

MatchMonitorHealth

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

QND.OMS.ManagedSystem.LastData.MT

Remotable

True

Accessibility

Public

Alert Message

QND - OMS System Data obsolete

{0} data is obsolete. Last data point received {1} hours ago

RunAs

Default

Source Code:

<UnitMonitor ID="QND.OMS.ManagedSystemLastData.Monitor" Accessibility="Public" Enabled="true" Target="QND.OMS.ManagedSystem" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="QND.OMS.ManagedSystem.LastData.MT" ConfirmDelivery="false">

  <Category>AvailabilityHealth</Category>

  <AlertSettings AlertMessage="QND.OMS.ManagedSystemLastData.Monitor.AlertMessage">

    <AlertOnState>Error</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>MatchMonitorHealth</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Property[Type="QND.OMS.ManagedSystem"]/Computer$</AlertParameter1>

      <AlertParameter2>$Data/Context/Property[@Name="AgeHours"]$</AlertParameter2>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="Healthy" MonitorTypeStateID="Healthy" HealthState="Success"/>

    <OperationalState ID="Late" MonitorTypeStateID="Late" HealthState="Warning"/>

    <OperationalState ID="Obsolete" MonitorTypeStateID="Obsolete" HealthState="Error"/>

  </OperationalStates>

  <Configuration>

    <IntervalSeconds>3611</IntervalSeconds>

    <SyncTime/>

    <TimeoutSeconds>900</TimeoutSeconds>

    <TraceLevel>2</TraceLevel>

    <Computer>$Target/Property[Type="QND.OMS.ManagedSystem"]/Computer$</Computer>

    <DelayLateHours>2</DelayLateHours>

    <ClientId>$Target/Host/Host/Host/Property[Type="Azure!Microsoft.SystemCenter.MicrosoftAzure.Subscription"]/ClientId$</ClientId>

    <SubscriptionId>$Target/Host/Host/Host/Property[Type="Azure!Microsoft.SystemCenter.MicrosoftAzure.Subscription"]/SubscriptionId$</SubscriptionId>

    <!-- <ResourceGroupId>$Target/Host/Property[Type="Azure!Microsoft.SystemCenter.MicrosoftAzure.ArmService"]/ResourceGroup$</ResourceGroupId> -->

    <Proxy>$Target/Host/Host/Host/Property[Type="Azure!Microsoft.SystemCenter.MicrosoftAzure.Subscription"]/ProxyServerAddress$</Proxy>

    <AuthBaseAddress>$Target/Host/Host/Host/Property[Type="Azure!Microsoft.SystemCenter.MicrosoftAzure.Subscription"]/Authority$</AuthBaseAddress>

    <ResourceBaseAddress>$Target/Host/Host/Host/Property[Type="Azure!Microsoft.SystemCenter.MicrosoftAzure.Subscription"]/ArmServiceUri$</ResourceBaseAddress>

    <AADUserName>$RunAs[Name="Azure!Microsoft.SystemCenter.MicrosoftAzure.RunAsProfile.ADCredentials"]/UserName$</AADUserName>

    <AADPassword>$RunAs[Name="Azure!Microsoft.SystemCenter.MicrosoftAzure.RunAsProfile.ADCredentials"]/Password$</AADPassword>

    <ResourceURI>$Target/Host/Property[Type="Azure!Microsoft.SystemCenter.MicrosoftAzure.AzureServiceGeneric"]/ServiceId$</ResourceURI>

    <OMSAPIVersion>2015-03-20</OMSAPIVersion>

    <MaxAgeHours>2</MaxAgeHours>

    <LookbackHours>240</LookbackHours>

    <DataTypes/>

  </Configuration>

</UnitMonitor>